Abstract: Objective:To observe the clinical effects of novel hollow lag screw combined with titanium cable tension band in the minimally invasive treatment of patellar transverse fracture.Methods:Fifty patients with patellar transverse fractures was divided into the control group(23 cases) and observation group(27 cases) according to the different surgical procedures.The control group was treated with conventional cable-pin system minimally invasive surgery,and the observation group was treated with novel hollow lag screws combined with titanium cable tension band fixation.The operation situation,complication and knee function recovery between two groups were compared.Results:The incision and intraoperative bleeding volume,off-bed bearing time and fracture healing time in observation group were significantly less than those in control group(P<0.01).All patients were followed up for 12 to 27 months.The excellent rates of knee joint activity and knee joint recovery in observation group and control group were (96.30% and 100.00%) and (86.96% and 82.61%),respectively,and the difference of which was not statistically significant(P>0.05).One case with skin pricking and 1 case with infection in control group were found,and the difference of the incidence rate of complications between the control group(8.70%) and observation group(0.00%) was not statistically significant(P>0.05).Conclusions:The novel hollow lag screw combined with titanium cable tension band in the minimally invasive treatment of patellar transverse fracture has small incision,little bleeding and quick recovery,which can be used as one of the preferred type of operation,and is worthy of promotion and application in clinic.